Piercing device



Oct. 2, 1951 A. E. GASDIA PIERCING DEVICE Filed March 29, 1948 Patented Oct. 2, 1951 1 UNITED STATES PATENT OFFICE PIERCING DEVICE Alfred E. Gasdia, Los Angeles, Calif. Application March 29, 1948, Serial No. 17,599

My invention relates to piercing devices and more particularly to apparatus which is especially adapted for puncturing the seal of a high pressure container filled with air or gas, such as (CO2) carbon dioxide, used in jet propelled units.

Accordingly an object of my invention is to provide a specially constructed piercing device or apparatus, having a suitably arranged piercing means slidably mounted in a holder or centralizing tube, also, having a suitable trigger means associated therewith for releasing said piercing means with sufficient force, so that the capping seal in said air or gas container may be punctured.

Another object of my invention is to provide said device with a suitable resilient means which is mounted upon a plunger or rod, adapted for restricting and for eliminating the jar caused by the sudden stop of said piercing means and when released from the cooked place and into its normally extended or rest position.

A further object of my invention is to provide said piercing means with a plunger or rod, having the frontwardly extending end provided with a removable stylus and arranged so that the same may be removed and exchanged for new when worn out or required.

Another object of my invention is to provide said device with a suitable front tube or barrel, said barrel having an adjustable means associated therewith adapted for decreasing or increasing the piercing position of said stylus, and thereby increasing or decreasing the opening or hole in said capping seal of said air or gas container.

My invention also has for its objects to provide such means that are positive in operation, con

vient in use, easily installed in a working position and easily disconnected therefrom, economical in manufacture, relatively simple, and of general superiority and serviceability.

The invention also comprisesnovel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description.

However, the drawings merely show and the following description merely describes the embodiments of the present invention, which is given by way of illustration or example only.

In the drawings, like reference characters designate similar parts in the several views; wherein, Fig. 1 is a horizontal elevational viewof the piercing device, shown in relation to a gas or air container, shown in dotted lines.

Fig. 2 is an. enlargedhorizontal sectional view ther of- H 4 Claims. (Cl. 164-1235) Fig. 3 is a vertical sectional view of the device, taken on the line 3--3 of Fig. 2.

Fig. 4 is a vertical sectional view, taken on the line 4-4 of Fig. 2.

Fig. 5 is a vertical sectional view, taken on the line 5-5 of Fig. 2.

Fig. 6 is another vertical sectional view, taken on the line 6-6 of Fig. 2.

Fig. 7 shows a vertical sectional view, similar in position as shown in Fig. 6, showing the plunger rod in locked position.

Fig. 8 is a vertical sectional view, similar in position as shown in Fig. 3, said view being slightly enlarged and showing the collet in modified form.

Fig. 9 shows a vertical fragmentary and sectional view of the device, showing the locking conical groove on a plunger rod in relation to a tripper plate.

Describing my invention more in detail, in its broader aspects,'said invention comprises a housing 2, having a threaded front end in which a barrel 4 is adjustably mounted and held in place by means of a threaded end section 6, and also having a suitable locking nut member 8 provided therein for locking said barrel 4 in position.

Said barrel 4 is tubular in structure, and is provided with a stabilizing front end bore [0 adapted for receiving therein the neck member I2 of a gas or air container l4, shown in dotted lines.

The rear end l6 of said housing 2 is provided with a center guide l8, which terminates at the center recess 20. Also, said housing 2, at the outer surface is provided with a suitable groove 22, the purpose of which will be presently described.

In said guide H! a plunger rod member 24 is slidably mounted, of which the rear end thereof is provided with a suitable knob 26 suitably se cured thereon. Also, in front of said knob a resilient collar member 28 is provided, as shown.

The outer surface of said housing 2 including said knob 26 is knurled, for facilitating the handling thereof.

In the mid-section 30 of said plunger rod 24 a conical groove 3| is provided, while at the front end section 32 a stylus member 34 is mounted within a collet bushing 36, having a longitudinal slot 38 forproviding tight fit of said stylus when in position. Plunger rod 24 also has suitably threaded section 40 adapted for fastening a collet nut 42 over said bushing 36 and for holding said stylus member 34 in position.

I .Said stylus member 34 is provided with an elongated piercing point, which extends front-e.

wardly from said bushing 36 and through said collet nut 42, as shown.

It may then be noted that said stylus member 34 may be removed and exchanged for new, when required or when said piercing point 44 becomes worn out or dull. V

Rearwardly of the base 46 of said collet nut 42 a suitable compression spring4l ismountedl which extends rearwardly and over said plunger rod member 24, the one end of which bears against said collet nut base 46 while the otherend 48 bears against said center recess of said housing 2.

Between the rear end N5 of saidhousingZ and,

said resilient collar member 28 a suitable tripping plate member 52 is mountedgyhavingan el'on gated hole 54 for receiving said plunger. rod member 24, the lower end of which is'slightly larger as shown in Figs. 5, 6 and '7, for eliminating binding; while the upper hole end' 56 is slightly smaller for providing a greater surface contact when dropped insaid conical groove 3| of said plunger rod member 24.-

In order to prevent said tripping plate member 52 from tilting facewardly, a pair of outward guards 58 are provided, which extend sidewardly, each having an inwardly bent guide extension .Bfl-which extends into and rests within said groove 22 of said housing 2. Also, the down-' wardly extending section 62-01 said tripping plate member 52- isprovided'with a ledge 64, which-is adapted for facilitating the tripping operation of saicl plunger rod member 24, when set in its cocked position.

Inoperation, said plunger rod member 24 is pulled rearwardly, see-Fig. 1, as shown in dotted lines, allowing said conical groove 3l -to' come beneath said elongated hole 54, and allowingthe said' conical groove 3!, and also causing said compressionspring 41 to become compressed;

As shown in Fig. 8 said collet bushing 36 is provided with several slots 38, each being longitudinal in structure as shown in Fig. 2, and thereby providing a greater binding effect upon said stylus member 34 when in position. Also, as shown in Fig. 9, said tripping plate member 52 may be made without side guides and be equally efiectivewhenin use and operation, however, the preferredembodiment of my invention of'said tripping plate member is shown in Figs. 1 to '7 inclusive.

While ,I have thus described my invention with great particularity, it will be clear that the same may be modified throughout a wide range.

I, accordingly, do not propose to be limited to the'exact details of construction herein shown on the drawings and described in the specification, but reserve the rights in practice to make the. necessary. changes and modifications therein, which may come within the scope. of-the-appended; claims. I

Iclaim as my invention: r

1. In azpiercing; device of the class described comprising, a housing, a barrel member detachably and adjustablymounted in said housing, a; locking nut, associated with said barrel member for holding and for maintaining said-barrel momher in an adjusted position. to saidhousing; a;

plunger rod member slidably, mounted said housing and extending into said barrel member-1,, a knob at the rear end of said plunger rod mem her, a collet means at the front end of said;

1 plunger rod member, a; stylus means removably Saidspn'ng- 41', when in compressed position, H

provides the drivingforce for saidstylus member.34.

When said stabilizing front end: bore: l0 is. placed over theneck member l2. oi. a gasor air container 54, asshown in Fig. .1, While said'istylus member 34 is held in its cocked position,.andi when said tripping plate member 52' moved into a disengaged position. and outof said conical groove 3|, then said spring 41; in expanding lengthwise, will causesaid' piercing point 44 tov penetrate into and through the capping seal disposed in said neck member [2 of said container l4, and causing the gas or air sealed therein to be released therefrom.

The position of said stabilizing front end bore.

Lil may be adjusted frontwardly or rearwardly;

w ch may be a small or large hole, as the case might be.

Said. resilient collar member 28 prevents and eliminates the jar, caused by the sudden stop mounted in said collet means, and'a compression spring mounted on the plunger rod and engag ing said housing for driving said plunger rod: means including said stylus-means frontwardly i from its rearwardl'. cocked osition. weight of said trippmg plate member 52- to cause y D said upper hole end 56 torest over andwithin 2. In a piercing device of. the class described, as disclosed in claim 1', wherein a resilient collar is provided between saidhousing and saidknob for preventing and for reducing the jar caused-by; the irontward movement of said plunger rod.- member into its, normally resting position.

'3. In a piercing device of. the class described; as. disclosedtin. claim 1, whereina tripper plate is provided. between said housingand said: knob; a conical groove means in said plunger rod member for engaging said tripper plate and thereby holding 'said' plunger rod 'member incocked po sition. V r r 3 4. In-a piercing device'of the class described;

, as disclosed in claim 3, wherein said housing; is

and arresting movement ofsaidplunger rod 24-,

spring. 41, thereby facilitating thehandling. 0

said: device and' the operation thereof. 7

provided with-groove means disposed at the rear end thereof; and guide extensions in said tripper' plate for guiding'the same into" locked" position when said plunger'rodimember is extendedrearwardly, thereby preventing said tripper plate from tilting when said device is in operative 'po'-" sition', substantially. as'described.

ALFRED E. GASDIA.

REFERENCES CITED The following references are of record'in the: file ofithis. patent:.

UNITED STATES PATENTS I Number Name Date 39,815; Huston Sept.8, 1863 394,60e. V Patten Dec. l8, 188$ 7 797,824 Seit'z-I"; Aug. 22, 1905' 1,373,367 Summers Mar. 29,-.1921 2,161,969 Mange June 13;-1 939 

